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Definition of Fahr syndrome
Medically reviewed by Min Clinic Staff | Updated: January 2026
Fahr syndrome: A rare, inherited, progressive brain disorder that is characterized clinically by involuntary movements, prolonged muscle contractions, and dementia. It is characterized by abnormal deposits of calcium in the basal ganglia and cerebral cortex of the brain. The gene that is responsible for Fahr syndrome has been mapped to chromosome 14. There is no cure for Fahr syndrome. Also called idiopathic basal ganglia calcification. Treatment is directed toward relieving symptoms.